[Al B. Fuct]

Originally Posted by SaRaNaC

Al frist i wanna say nice setup

Thanks.

i have a question. what is the white stuff you put on the rockwool, i am guessing it fights algae

It's Fytocell, a polymer resin plant growing medium.

Algae will grow on any medium that you can grow a plant in, but watering by flooding the media from the bottom keeps the tops rather dry, too dry to support algae most of the time.